I would do something along these lines
PCPartPicker part list:
http://pcpartpicker.com/p/3c9dY
Price breakdown by merchant: http://pcpartpicker.com/p/3c9dY/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3c9dY/benchmarks/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($219.00 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ NCIX US)
Motherboard: ASRock Z87 Pro4 ATX LGA1150 Motherboard ($99.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($84.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($88.98 @ SuperBiiz)
Video Card: Gigabyte GeForce GTX 770 4GB Video Card ($379.99 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($54.99 @ NCIX US)
Power Supply: Antec Neo Eco 620W 80+ Certified ATX Power Supply ($68.99 @ Mwave)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($15.98 @ OutletPC)
Total: $1042.90
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-18 15:08 EDT-0400)
If you search around you can probably get a better deal on some of the components, mainly the CPU and GPU as well. IDK how prices are over the pond either and how well this translates
EDIT: I forgot to add windows to that so add $100 to the price, unless you have a copy laying around. I know students can often get a copy for free or cheap ($30) in the US. If you want to trim some off of the budget, you could also drop the CPU cooler if you don't plan to over clock your cpu.